What problems need to be paid attention to when using a liquid alkali dosing pump

The liquid alkali dosing pump is used to transport, lift and add liquid soda, which is the liquid sodium hydroxide, also known as caustic soda and caustic soda. Due to the different production processes in existing chlor-alkali plants, the concentration of liquid soda is usually 30-32 or 40-42 percent. Sodium hydroxide is a highly corrosive, alkaline, soluble in water and forms an alkaline solution.

Lye dosing pumps are widely used in the manufacturing industry, in the production of dyes, plastics, chemicals, the production of old rubber, the electrolysis of metal sodium, water and the production of inorganic salts.

It has different functions in different stages of liquid alkali treatment, which is called liquid alkali dosing self-priming pump when transporting and circulating liquid alkali, called liquid alkali dosing magnetic pump when treating large flow liquid medicine, and called liquid alkali dosing metering pump when alkali needs to be added quantitatively. The liquid alkali dosing pump produced by Meibao environmental protection has self-priming pump, magnetic pump, metering pump, and the following is the display of Meibao lye dosing pump:

A chemical dosing pump is a water pump that transports a variety of chemical liquids. Generally, there are metering dosing pumps, quantitative dosing pumps, and liquid dosing pumps.

A chemical dosing pump is a water pump that transports a variety of chemical liquids. Generally, there are metering dosing pumps, quantitative dosing pumps, and liquid dosing pumps. Chemical dosing.

Be sure to clean it after use, this is the main thing, because it is still corrosive, so you must pay attention to this aspect.

When the monthly inspection and dosing can't be done, you should pay attention to the situation that in the process of joining, you should look at what its volume is and their proportion.

First of all, it is necessary to pay attention to the proportion of pesticides.

Do you want to pay attention to what problems should you pay attention to when you use it at night, this should be a matter of attention, it should be in the manual, learn more about the use of some situations, and look at the manual or something.

The liquid alkali dosing pump is mainly used for the transportation, circulation, lifting and dosing of alkaline liquid solution. The water pumps used in different treatment stages of liquid alkali are also different, and the liquid alkali magnetic dosing pump is generally used when transporting from the storage tank, and when the dosing system is equipped with the use, the liquid alkali metering and dosing pump is generally used to carry out the quantitative metering and dosing of liquid alkali.

1: Simple and convenient operation, mechanical drive diaphragm.

2: Good sealing, no leakage, simple assembly and maintenance.

3: It can convey high viscosity media, corrosive liquids and hazardous chemicals.

4: Flow regulation can adjust the stroke length or motor frequency.

5: The diaphragm is pressed by a multi-layer composite structure, the first layer of super-tough Teflon acid-resistant film, the second layer of EPDM elastic rubber, the third layer of support core, the fourth layer of reinforced nylon fiber, and the fifth layer of EPDM elastic rubber are completely covered, which can improve the use efficiency.

The liquid alkali magnetic dosing pump can also be driven by magnetic force, without shaft seal design, completely leak-proof, and will not cause leakage of chemical liquid and cause environmental pollution. Conveying of various chemical acids and alkalis. Pump operating temperature:

CFRPP-75 degrees, CPVC-80 degrees, PVDF-90 degrees, depending on the nature of the chemical liquid.

The liquid alkali metering and dosing pump is made of FRPP, PVDF, stainless steel and other corrosion-resistant materials. It is suitable for the use of dosing processes in various sewage treatment and waste gas treatment. It has the advantages of automatic, adjustable, precision dosing and corrosion resistance.

1. The size of the back pressure.

Back pressure refers to the pressure at the outlet of the metered leakage pump; The back pressure at the outlet of the dosing device of the sewage treatment system is relatively small, and the dosing point is only 20-50pa when it is located in the open reaction tank; When dosing with a pipeline mixer, the pipe pressure is the amount of back pressure; When the circulating water system is dosed, the pressure at the dosing point of the return pipe is the back pressure.

The selection pressure of the dosing metering pump must be greater than the back pressure agent before it can be injected into the system to be filled, which is generally greater than the back pressure of about 10-20.

2. The size of the flow rate.

The flow rate of the dosing metering pump must be guessed under back pressure, and many customers do not notice this. When confirming the flow rate of the metering pump, the backward method is generally adopted, that is, the amount of pure agent added is confirmed according to the nature parameters of the water, and then the dilution ratio is confirmed, and then the working flow of the metering pump is launched, and the working flow generally accounts for 50-80 of the flow rate of the metering pump, and the margin is beneficial to the commissioning of the system and the fluctuation of water quality.

3. The material of the pump head The material of the pump head is commonly used in PVC, PP, PTFE, PVDF, stainless steel, and the agent is considered when selecting the model.

The stainless steel pump is within 50% of the alkali. Caustic temperatures between 100 and 200 degrees Celsius will cause corrosion, and stress corrosion cracking can occur.

It can be used to transport lye and caustic soda, but it should be noted that there are two situations: 1. The concentration of lye between 30-50 degrees Celsius exceeds 100 degrees Celsius and will produce rot 2Concentrations above 80% above 100 degrees Celsius will cause corrosion.

3. What should be paid attention to in the selection of lye pump, generally speaking, the selection of lye pump determines the model, the material must be selected, in line with the operation of the lye pump, can be used normally and achieve the treatment process needs to be destroyed, and other aspects will consider the performance, such as acid and alkali resistance, conveying efficiency, noise, and then consider the pump cost, different types of pumps, naturally different, because some pumps can also meet the process requirements, but the performance, filial piety and cost will also be quite different.

A chemical dosing pump is a water pump that transports a variety of chemical liquids. Generally, there are metering dosing pumps, quantitative dosing pumps, and liquid dosing pumps.

Precautions for the use of chemical dosing pumps:

1.When using the chemical dosing pump, do not arbitrarily change the chemical properties of the conveying, because the mixing of different chemicals will produce various different chemical changes, and even the chemical reaction will produce high heat, damaging the pump body. If you have any questions about chemical compounding, please consult a professional.

2.There are many chemical properties, which can cause great harm to the human body, and personnel should try to avoid dangerous areas.

3.Before starting the power supply, check the correct position of the pipeline and valve, then start the power supply, and check whether the liquid discharge is normal at any time.

Is sodium hydroxide itself a solid or liquid.

Whether the transfer pump itself is resistant to sodium hydroxide corrosion.

Safety matters in the conveying process, closed conveying or open conveying. In the case of open conveying, the operator needs to wear the appropriate protective clothing.

Whether there will be sodium hydroxide crystals during the conveying process, resulting in unsmooth conveyance, etc.

Whether it is necessary to fill with inert gas during the conveying process to avoid the deterioration of sodium hydroxide by reacting with carbon dioxide in the air.

Sodium hydroxide, with the chemical formula NaOH, commonly known as caustic soda, caustic soda, caustic soda, is a strong alkali with strong corrosiveness, generally in the form of flakes or blocks, easily soluble in water (exothermic when dissolved in water) and forms an alkaline solution, and deliquescent, easy to absorb water vapor (deliquescent) and carbon dioxide (deterioration) in the air, hydrochloric acid can be added to test whether it is deteriorated.

NaOH is one of the essential chemicals in chemical laboratories and one of the common chemicals. Pure products are colorless and transparent crystals. Density.

Melting point. Boiling point 1390 . Industrial products contain small amounts of sodium chloride and sodium carbonate, which are white opaque crystals.

There are blocks, sheets, granules and rods, etc. Formula.

Sodium hydroxide can be used as an alkaline cleaning agent in water treatment, soluble in ethanol and glycerol; Insoluble in propanol, ether. It disproportionates with halogens such as chlorine, bromine, and iodine. It neutralizes with acids to form salt and water.

The concentration and temperature of NaOH, the resistance of the material to NaOH corrosion, whether the lye has particles, and the crystallization temperature (whether it needs to be kept warm).

Precautions for the pumping process of concrete transfer pump:

1.In the process of pumping, if the concrete pump needs to connect the conveying pipe with a length of more than 3m (including 3m), it should still wet and lubricate the inner wall of the pipeline with water and cement slurry or cement mortar in advance.

2.In the process of concrete pumping, the concrete in the dismantled conveyor pipe shall not be scattered in the unpoured place.

3.When the concrete pump is difficult to pump due to the phenomenon of rising pressure and instability, oil temperature rising, obvious vibration of the conveying pipe, etc., it shall not be forcibly pumped, and the cause shall be immediately ascertained and measures should be taken to eliminate it.

Elimination method: You can first use a mallet to knock on the elbow, conical pipe and other parts of the conveying pipe, and carry out slow pumping or reverse pumping to prevent blockage.

The dosing pump generally refers to the water pump used to transport the agent, as the name suggests, the liquid alkali dosing pump is the water pump used to transport the liquid alkali.